Post
by VK3KYY » Wed Jan 31, 2024 11:06 am
New Information
I already knew that MD2017 has 2 transceiver chips in it, but I could not see an audio signal output from TRx_2 (secondary TRx chip)
TRx_2 definitely does not have a RF Out connection for Tx, and does not have a Mic input connection
But I received new information today, from Silvano IU2KWO, that there is an audio output from TRx_2 and also that each TRx in the radio has separate Rx preamps for VHF and for UHF. i.e the radio has 2 x VHF and 2 x UHF RF preamps
So... The radio is capable of true Dual Watch on FM, and may even be capable of Single Frequency Repeater on DMR.
The limition in Dual Watch is that there is only 1 DMR chip in the radio, so it can't decode signals from TRx_1 and TRx_2 at the same time, so the radio can't know if there is a DMR signal on TRx_2 without interruping DMR Rx on TRx_1
But this is only a limitation if a frequency can have multiple modes e.g. DMR and D-STAR and YFS or FM etc.